瘋癲

Verb

 * 1) to be insane; to be crazy; to be mad

Etymology
Ultimately from. First appears in 1374.

Noun

 * 1) insanity, mental illness; more specifically, of the varieties of acquired mental illness, those forms of insanity marked by confused speech, clouded consciousness, and emotional outbursts
 * 2)  an insane person
 * 3) a vagabond, a wanderer
 * 1) a vagabond, a wanderer

Derived terms

 * : an asylum, a mental hospital